Registration Dossier
Registration Dossier
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EC number: 232-339-7 | CAS number: 8005-52-5 This substance is identified in the Colour Index by Colour Index Constitution Number, C.I. 29000.
Melting point / freezing point
Administrative data
Link to relevant study record(s)
- Endpoint:
- melting point/freezing point
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Study period:
- 29.08.2017
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
- Qualifier:
- according to guideline
- Guideline:
- EU Method A.1 (Melting / Freezing Temperature)
- Version / remarks:
- Council Regulation (EC) No.440/2008, Published in O.J. L 142, 2008
- Deviations:
- no
- GLP compliance:
- yes (incl. QA statement)
- Type of method:
- differential scanning calorimetry
- Key result
- Decomposition:
- yes
- Decomp. temp.:
- > 245 °C
- Conclusions:
- The evaporation of water or other solvent was observed between 30 °C and 230 °C. The rapid thermal decomposition of test substance started at temperature 245 °C. No peak corresponding to melting or boiling of test substance was observed to the temperature at which the thermal decomposition started.Melting temperature and boiling temperature of test substance, Direct Yellow 44, could not be determined due to thermal decomposition of test substance.
- Executive summary:
The melting and boiling temperatures of the test substance, Direct Yellow 44, were investigated. The Differential Scanning Calorimetry method was used.
The procedures used in the study were in accordance with:
- Method A.1. Melting/Freezing temperature, Council Regulation (EC) No.440/2008, Published in O.J. L 142, 2008
- OECD Test Guideline No.102, Melting Point/Melting Range, Adopted July 27, 1995
- Method A.2 – Boiling Temperature (1.6.6.2 Differential scanning calorimetry), Council Regulation (EC) No.440/2008, Published in O.J. L 142, 2008
- OECD Test Guideline No 103, Boiling Point, Adopted July 27, 1995
The thermal decomposition of the test substance started at temperature 245 °C, i.e. 518 K. No peak corresponding to melting or boiling of test substance was observed to the temperature at which the thermal decomposition started.
Melting temperature and boiling temperature of test substance, Direct Yellow 44, could not be determined due to thermal decomposition of the test substance.
Reference
Description of key information
The evaporation of water or other solvent was observed between 30 °C and 230 °C. The rapid thermal decomposition of test substance started at temperature 245 °C. No peak corresponding to melting or boiling of test substance was observed to the temperature at which the thermal decomposition started.
Melting temperature and boiling temperature of test substance, Direct Yellow 44, could not be determined due to thermal decomposition of test substance.
Key value for chemical safety assessment
- Melting / freezing point at 101 325 Pa:
- 245 °C
Additional information
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